Perhaps you should try some spelling variations:
thuc nang » chuc nang, thuc trang, thich nang
phien nam » phien ban, phien hai, phien tai
hoc vien » hoc hien, hoc tieng, hoc vi
hien nay » hien dai
mien nam » mien nui, mien bac
vung hoc » dung hoc, vung moc, trung hoc
tai vung » thai vung, tai vuong, tay vung
vien nam » vien dai, van nam, vien da
tac nang » tac vang, tai nang, tich nang
dan thuc » dan toc, am thuc
hoc viet » hoc hien
nang hoc » nang doc, nang luc, dong hoc
tap nang » tai nang, phap nang, cam nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( canh ((tac nang) or (tap nang)) hoc viet nam ) or ( dan thuc nang hoc viet nam ))) or ((( doanh tai vung hoc ((phien nam) or (((mien nam) OR (hien nay)))) ) or ( doanh tai vung hoc vien nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( canh ((tac nang) OR (tap nang)) hoc viet nam ) OR ( dan thuc nang hoc viet nam ))) OR ((( doanh tai vung hoc ((phien nam) OR (((mien nam) OR (hien nay)))) ) OR ( doanh tai vung hoc vien nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( canh ((tac nang) or (tap nang)) hoc viet nam ) or ( dan thuc nang hoc viet nam ))) or ((( doanh tai vung hoc ((phien nam) or (((mien nam) OR (hien nay)))) ) or ( doanh tai vung hoc vien nam ))))".
• Adding a wildcard symbol may retrieve word variants: (((( canh ((tac nang) or (tap nang)) hoc viet nam ) or ( dan thuc nang hoc viet nam ))) or ((( doanh tai vung hoc ((phien nam) or (((mien nam) OR (hien nay)))) ) or ( doanh tai vung hoc vien nam ))))*.